SparseUtils

java.lang.Object

org.flag4j.operations.sparse.coo.SparseUtils

public final class SparseUtils extends Object

Contains common utility functions for working with sparse matrices.

Constructor Summary

Constructors

Constructor

Description

SparseUtils()
Method Summary

Modifier and Type

Method

Description

static Map<Integer,List<Integer>>

createMap(int nnz, int[] rowIndices)

Creates a HashMap where the keys are row indices and the value is a list of all indices in src with that row index.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- SparseUtils
  
  public SparseUtils()
Method Details
- createMap
  
  public static Map<Integer,List<Integer>> createMap(int nnz, int[] rowIndices)
  
  Creates a HashMap where the keys are row indices and the value is a list of all indices in src with that row index.
  
  Parameters:
  
  nnz - Number of non-zero entries in the sparse matrix.
  
  rowIndices - Row indices of sparse matrix.
  
  Returns:
  
  A HashMap where the keys are row indices and the value is a list of all indices in src with that row index.